Please solve this and give full explanation and how we put in this cos please tell me
Please solve this and give full explanation and how we put in this cos please tell me
ARUN KUMAR , 7 Years ago
Grade 12th pass
10 grade maths> Please solve this and give full explanati...
1 Answers
Aastha Singh
Dear student,
from formula:
sin2A = 2 sinA cosA ->equation 1
from question:
2 sinA cosA= sinA
2cosA =sinA/sinA
cos A = ½ ->eqn 2
since,
cos 60 =1/2 ->from theory
cos A = ½ →from eqn 2
A = 60 deg
hope this helps :)
from formula:
sin2A = 2 sinA cosA ->equation 1
from question:
2 sinA cosA= sinA
2cosA =sinA/sinA
cos A = ½ ->eqn 2
since,
cos 60 =1/2 ->from theory
cos A = ½ →from eqn 2
A = 60 deg
hope this helps :)
LIVE ONLINE CLASSES
Prepraring for the competition made easy just by live online class.
Full Live Access
Study Material
Live Doubts Solving
Daily Class Assignments
Other Related Questions on 10 grade maths
How do you find the Maclaurin series for tanx?
How do you find the Maclaurin series for tanx?
10 grade maths
1 Answer Available
Last Activity: 11 Months ago
Why is Axiom 5, in the list of Euclid’s axioms, considered a ‘universal truth’? (Note that the equation is not about the fifth postulate.)
Why is Axiom 5, in the list of Euclid’s axioms, considered a ‘universal truth’? (Note that the equation is not about the fifth postulate.)
10 grade maths
1 Answer Available
Last Activity: 11 Months ago
The smallest composite number is ______.
(a) 2
(b) 4
(c) 1
(d) None of these
The smallest composite number is ______.
(a) 2
(b) 4
(c) 1
(d) None of these
10 grade maths
1 Answer Available
Last Activity: 11 Months ago
Find the arithmetic mean of the first ten odd natural numbers.
Find the arithmetic mean of the first ten odd natural numbers.
10 grade maths
1 Answer Available
Last Activity: 11 Months ago